def decommission_dn(nn, inst_to_be_deleted, survived_inst):
with remote.get_remote(nn) as r:
r.write_file_to('/etc/hadoop/dn.excl',
utils.generate_fqdn_host_names(inst_to_be_deleted))
run.refresh_nodes(remote.get_remote(nn), "dfsadmin")
context.sleep(3)
att_amount = 10
while att_amount:
cmd = r.execute_command(
"sudo su -c 'hadoop dfsadmin -report' hadoop")
all_found = True
datanodes_info = parse_dfs_report(cmd[1])
for i in inst_to_be_deleted:
for dn in datanodes_info:
if (dn["Name"].startswith(i.internal_ip)) and (
dn["Decommission Status"] != "Decommissioned"):
all_found = False
break
if all_found:
r.write_files_to({
'/etc/hadoop/dn.incl':
utils.generate_fqdn_host_names(survived_inst),
'/etc/hadoop/dn.excl':
"",
})
break
context.sleep(3)
att_amount -= 1
if not att_amount:
raise Exception("Cannot finish decommission")
def decommission_dn(nn, inst_to_be_deleted, survived_inst):
with remote.get_remote(nn) as r:
r.write_file_to("/etc/hadoop/dn.excl", utils.generate_fqdn_host_names(inst_to_be_deleted))
run.refresh_nodes(remote.get_remote(nn), "dfsadmin")
context.sleep(3)
att_amount = 100
while att_amount:
cmd = r.execute_command("sudo su -c 'hadoop dfsadmin -report' hadoop")
all_found = True
datanodes_info = parse_dfs_report(cmd[1])
for i in inst_to_be_deleted:
for dn in datanodes_info:
if (dn["Name"].startswith(i.internal_ip)) and (dn["Decommission Status"] != "Decommissioned"):
all_found = False
break
if all_found:
r.write_files_to(
{"/etc/hadoop/dn.incl": utils.generate_fqdn_host_names(survived_inst), "/etc/hadoop/dn.excl": ""}
)
break
context.sleep(3)
att_amount -= 1
if not att_amount:
raise Exception("Cannot finish decommission")
def decommission_tt(jt, inst_to_be_deleted, survived_inst):
with remote.get_remote(jt) as r:
r.write_file_to("/etc/hadoop/tt.excl", utils.generate_fqdn_host_names(inst_to_be_deleted))
run.refresh_nodes(remote.get_remote(jt), "mradmin")
context.sleep(3)
r.write_files_to(
{"/etc/hadoop/tt.incl": utils.generate_fqdn_host_names(survived_inst), "/etc/hadoop/tt.excl": ""}
)
def decommission_tt(jt, inst_to_be_deleted, survived_inst):
with remote.get_remote(jt) as r:
r.write_file_to('/etc/hadoop/tt.excl',
utils.generate_fqdn_host_names(inst_to_be_deleted))
run.refresh_nodes(remote.get_remote(jt), "mradmin")
context.sleep(3)
r.write_files_to({
'/etc/hadoop/tt.incl':
utils.generate_fqdn_host_names(survived_inst),
'/etc/hadoop/tt.excl':
"",
})
def _push_configs_to_nodes(self, cluster, instances=None):
extra = self._extract_configs_to_extra(cluster)
if instances is None:
instances = utils.get_instances(cluster)
for inst in instances:
ng_extra = extra[inst.node_group.id]
files = {
'/etc/hadoop/core-site.xml': ng_extra['xml']['core-site'],
'/etc/hadoop/mapred-site.xml': ng_extra['xml']['mapred-site'],
'/etc/hadoop/hdfs-site.xml': ng_extra['xml']['hdfs-site'],
'/tmp/savanna-hadoop-init.sh': ng_extra['setup_script']
}
with remote.get_remote(inst) as r:
# TODO(aignatov): sudo chown is wrong solution. But it works.
r.execute_command('sudo chown -R $USER:$USER /etc/hadoop')
r.execute_command('sudo chown -R $USER:$USER /opt/oozie/conf')
r.write_files_to(files)
r.execute_command(
'sudo chmod 0500 /tmp/savanna-hadoop-init.sh')
r.execute_command('sudo /tmp/savanna-hadoop-init.sh '
'>> /tmp/savanna-hadoop-init.log 2>&1')
nn = utils.get_namenode(cluster)
jt = utils.get_jobtracker(cluster)
with remote.get_remote(nn) as r:
r.write_file_to(
'/etc/hadoop/dn.incl',
utils.generate_fqdn_host_names(utils.get_datanodes(cluster)))
if jt:
with remote.get_remote(jt) as r:
r.write_file_to(
'/etc/hadoop/tt.incl',
utils.generate_fqdn_host_names(
utils.get_tasktrackers(cluster)))
oozie = utils.get_oozie(cluster)
if oozie:
with remote.get_remote(oozie) as r:
r.write_file_to(
'/opt/oozie/conf/oozie-site.xml',
extra[oozie.node_group.id]['xml']['oozie-site'])
def _push_jobtracker_configs(self, cluster, r):
r.write_file_to(
'/etc/hadoop/tt.incl',
utils.generate_fqdn_host_names(utils.get_tasktrackers(cluster)))
def _push_namenode_configs(self, cluster, r):
r.write_file_to(
'/etc/hadoop/dn.incl',
utils.generate_fqdn_host_names(utils.get_datanodes(cluster)))
def _push_jobtracker_configs(self, cluster, r):
r.write_file_to('/etc/hadoop/tt.incl',
utils.generate_fqdn_host_names(
utils.get_tasktrackers(cluster)))
def _push_namenode_configs(self, cluster, r):
r.write_file_to('/etc/hadoop/dn.incl',
utils.generate_fqdn_host_names(
utils.get_datanodes(cluster)))